async function run($input, $output, $modules = modules) {
    /**获取客户列表
     * 官方api:https://work.weixin.qq.com/api/doc/90000/90135/92113
     * 错误码查询工具：https://open.work.weixin.qq.com/devtool/query?e=
    */
    const wxworkApi = $modules.wxworkApi;

    //获取指定成员的客户
    let getExternalContactList = await wxworkApi.getExternalContactList($input.userid);
    //转为字符串输出
    $output.externalUseridList = JSON.stringify(getExternalContactList.external_userid);
}